Siglos Karaoke Player/Recorder features state-of-the-art technology that makes CD+G look much better. You can control its behaviour in Display section of Settings. In general there are three steps of CD+G enhancement:
Smart resolution increase
This technology allows to reduce jagged edges of CD+G images and makes it look much smoother and precise.
Gradient overlay
With gradient overlay each line of karaoke lyrics has three-dimentional look.
Shadow
Adding shadow effect to the lyrics makes them 'stand out' from the background.
NOTE: You may need to disable some of the effects on slow computers if you are experiencing performance problems.